Update influenza-like-illness-analysis.Rmd

module3/exo1/influenza-like-illness-analysis.Rmd

@@ -49,11 +49,11 @@ This is the documentation of the data from [the download site](https://ns.sentiw
 | `geo_insee`  | Identifier of the geographic area, from INSEE https://www.insee.fr                                                        |
 | `geo_name`   | Geographic label of the area, corresponding to INSEE code. This label is not an id and is only provided for human reading |
 
-### Download
+### Reading the data
 
 The first line of the CSV file is a comment, which we ignore with `skip=1`.
 ```{r}
-data = read.csv(data_url, skip=1)
+data = read.csv(data_file, skip=1)
 ```
 
 Let's have a look at what we got: